Home / 76,620.72-114,933-21,217.20

Finding the Fourth Proportional to 76,620.72, 114,933 and 21,217.20

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Solution

The fourth proportional to 76,620.72, 114,933 and 21,217.20 is: 31,826.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,620.72 : 114,933 = 21,217.20 : x
  2. Step 2: Convert to fraction form
    76,620.72/114,933 = 21,217.20/x
  3. Step 3: Cross multiply
    76,620.72x = 114,933 × 21,217.20
  4. Step 4: Simplify right side
    76,620.72x = 2,438,556,447.60
  5. Step 5: Solve for x
    x = 2,438,556,447.60/76,620.72
  6. Step 6: Final answer
    x = 31,826.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.